21790010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{198091}}^1$

素因数の和:198109

約数の個数: 16

約数和(自身を含む): 42787872

約数和(自身を除く): 20997862

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 198091, 396182, 990455, 1980910, 2179001, 4358002, 10895005, 21790010]

約数ペア:

[(1, 21790010), (2, 10895005), (5, 4358002), (10, 2179001), (11, 1980910), (22, 990455), (55, 396182), (110, 198091)]